t=0
func(){
	let t++
	echo func1
	echo "$t oooooooooooooooo"
	read a
}
func2(){
i=5
	echo $t func2
	while((i-->0)); do
		func
	done
}
func3(){
j=5
	let j--
	echo $t func3
	while((j-->0)); do
		func2
	done
}
func4(){
k=5
	let k--
	echo $t func4
	while((k-->0)); do 
		func3
	done
}
a=3
b=4
echo $((4*4*5))
func4
echo $t
